ci: bump pom snapshot version (#11)

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pom.xml

@@ -12,7 +12,7 @@
     </parent>
 
     <artifactId>mock-channel-connector</artifactId>
-    <version>0.2.0-SNAPSHOT</version>
+    <version>0.3.0-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <properties>